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Intangible Assets And Goodwill (Consolidated Goodwill) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Intangible Assets And Goodwill [Abstract]      
Beginning balance $ 19,641 $ 16,135  
Contingent earnout payment from CoveyLink acquisition 262 3,456  
Acquisition of Red Tree, Inc.   50  
Accumulated impairments 0 0 $ 0
Ending balance $ 19,903 $ 19,641 $ 16,135